AS-CH75VN Single Cartridge Mechanical Seal To Replace Burgmann H75VN Seal

Description：
This seal is to replace Burgmann H75VN single cartridge mechanical seal.

 Features:
Independent of direction of rotation
Rotating multiple springs design
Integrated pumping device available

Suggested Operating Limits:
Shaft diameter: d = 20 — 110 mm (0.79" —4.33")*
Pressure: p1 = 40 bar (580 PSI)
Temperature: t = -40 °C—+220 °C (-40 °F—428 °F)
Sliding velocity: vg = 23 m/s (75 ft/s)
Axial movement: ± 2.0—4.0 mm depending on diameter and installation situation
* Other sizes on request

Materials:
Seal face: Carbon graphite antimony impregnated (A)
Seat: Silicon carbide (Q1, Q2)
Secondary seals: EPDM (E), NBR (P), FKM (V), FFKM (K)
Springs: Hastelloy® C-4 (M)
Metal parts: CrNiMo steel (G), Duplex (G1), Hastelloy® C-4 (M)

Background Knowledge：

What is he temperature rise of the sealing end face of the mechanical seal:

 The temperature rise of the end face of the mechanical seal refers to the difference between the temperature of the sealing end face and the temperature of the medium of the sealing box (ambient temperature). From the temperature rise of the sealing end face, the working condition of the sealing pair can be judged. When the temperature rise is too high, it will cause gasification of the medium between the friction surfaces, deformation of the sealing ring, thermal wear, and thermal shock and thermal cracking caused by the temperature change. In the sealing of petrochemical machinery and pumps, the deterioration of the sealed medium will also be caused by temperature changes, such as the solidification, polymerization, crystallization, dissolution and coking of the medium.